package com.hidt.shop.interceptor;

import org.springframework.web.servlet.HandlerInterceptor;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;

public class LoginValidateInterceptor implements HandlerInterceptor {
    @Override
    public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler)
            throws Exception {
        HttpSession session = request.getSession();
        if (session.getAttribute("loginName") == null) {
            request.setAttribute("message", "请登录");
            request.getRequestDispatcher("/login.jsp").forward(request, response);
            System.out.println("未登录，跳转...");

            return false;
        }
        return true;
    }
}
